{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1420",
    "entityType": "User",
    "nonce": "0x421a77cc89ce68f3c4b1b7b4d4e407c78a3d37578c192fbac96d88a7fa2a486d",
    "signature": "0xf606f6f6666437620295a1e0125c4c719202b3346d6235ba06e16518fad4876065ef53786cebea8faa3999a18bd0379de71cdf3a9c4099e15e53328fa0b117db1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}